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The objectives of this experiment are to:-
(a)  prove  the  additivity  of    absorbance  for  a  two-components  mixture.    This  is important as a large number of colored substances interact with each other in a mixture and hence cannot be studied by this technique.  
(b)  determine  the  suitable  wavelength  (¦Ë  and  ¦Ë¡¯)  for  the  analysis.  For  a  two-components system, the most suitable wavelength is where the absorbance for the  first component is the strongest while the absorbance of the second component is  the weakest.
(c)  determine the values of the constants k1(¦Ë), k1(¦Ë¡¯), k2(¦Ë) and k2(¦Ë¡¯).
(d)  measure the absorbance of  a mixture at ¦Ë and ¦Ë¡¯.  
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[ Last edited by ¹Å³ÇÕÕ on 2012-12-18 at 08:29 ]
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